Calculate your engine's true HP/Torque Curves
 

the minimum info i would need to calculate you HP/Torque Curve

1-Total Car Weight with driver
2-Frontal Area in Sq.Ft.
3-Cd (Drag Coefficient)
4-Automatic/Converter or Standard/Clutch
5-Ram-Air HoodScoop or breathing just underhood air (no Ram-Air)
6-Shift RPM
7-Cross RPM
8- 1/4 mile ET and 1/4 mile MPH from time slip
9- Barometric Pressure Inches Hg.
10-Temperature degrees F
11- Relative Humidity % percent

------------------------------------------------

2-Frontal Area in Sq.Ft.
3-Cd (Drag Coefficient)
......if you don't know this Info, then post what
Year Car , Make , and Model
Body Type=Convertible/FastBack/ etc.

-----------------------------------------------------------
For greater accuracy of HP/Torque Curve then also post ;

Post Options ;
1- 60 Ft , 330 Ft , 660Ft, 1000 Ft, 1320Ft ET Times + MPH
2- 60 Ft, 660 FT , 1320 FT + MPH
3- 1320 FT + MPH
4- 60 Ft and 660 Ft

...above 4 options are in descending accuracy order

-------------------------------------------------------------

if you want extreme accuracy calculation of Hp/Torque Curve
then also post as many of the Inputs below ;

1- Transmission Ratios for all gears/speeds
2- Rear gear ratio
3- Rear tire diameter or rollout in inches
4- Rear tire width in inches
5- Rear wheel rim width in inches
6- Launch RPM
7- Converter (Max) Stall RPM
8- Track Elevation in Feet (track's physical height)
9- Density Altitude in feet
10- Wet Bulb Temp deg F
11- Vapor pressure in Inches Hg.
12- Engine Size in cubic inches
13- Compression Ratio

With above Inputs , you can determine such things ,
true real Engine's Torque and HP output !!
you can use this Physics Info to determine if a certain Chassis
or Engine Dyno claims are bogus or misleading .

Determine Torque Converter Lockup/Slip Percentages ,
Torque Converter Multiplication values , and many other things.

Re: Calculate your engine's true HP/Torque Curves
 

Glad to see you posting on here.

Re: Calculate your engine's true HP/Torque Curves
 

Thanks Candy and Alan !!

didn't realize you had Toll Free number

i'll use it next time <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

Re: Calculate your engine's true HP/Torque Curves
 

So your going to figure it out with the software?
ok, this was my last blower run with the stock shortblock.

weight-3650
98' Pontiac T.A.(DON'T KNOW FRONTAL AREA OR Cd.)
auto
no ram air(supercharged)
6200 shifts
around 5000 cross rpm
60ft-1.97
330-5.035
1/8-7.509 at 100.27mph
1/4- 11.47 at 123.23mph
temp around 75'
humidity-70%
baro 30.00
346 cubes
10.1 compression
launch rpm-1100rpm
tire diameter-26.2" and 10" width ,15" wheel
Converter stall- 3500rpm
2.73 rear gear
trans ratios- 3.06-1.62-1.0
track elevation-730 ft

Steve

Re: Calculate your engine's true HP/Torque Curves
 

Steve , the best information i could find
on your car was

Drag Coefficient (Cd) = .34
Frontal Area (Sq.Ft. as per 80 % Shape Factor)
= 21.522 effective Fa

the 15" wheel you posted , i assumed it was
the diameter of the wheel ? , but i needed
the width of the wheel or rim , so i guessed it might be also 10.0" wide

results were ;
Torque Converter Lockup percent= 86.40 %
Torque Converter Slippage = 13.6 %
-----------------------------------------------
Tire Rollout at Start = 82.3 inches rollout
Tire Rollout at 1/4 mile = 82.8 inches rollout
-----------------------------------------------
Tire Growth = 0.5 inches in rollout @ 1320 Ft

Peak HP=562.4 Peak Torque=519.3

note= you posted "crossed around 5000 rpm"
and along with guess on rim width , those 2 guesses could throw off the Torque Converter Slippage/LockUp percents ..but it should still be close to actual numbers .

Before the 1/8 mile (660 Ft) Tire Traction losses and launch RPM is consuming a lot of HP
during the run.

After 660 Ft to 1320 , especially around the
1000 Ft ET , the engine is making maximum HP

Re: Calculate your engine's true HP/Torque Curves
 

Now is this calculated RWHP or FLWHP?
yes 15"x10" wheels.
I have actually logged almost exactly 500rpm( 500-511) converter slippage at 6000rpm but with a lot more below that, so those results sound good overall.
Very nice results.
Steve

Re: Calculate your engine's true HP/Torque Curves
 

Steve ,
Peak HP=562.4 Peak Torque=519.3
was the "AVERAGE" Flywheel HP and Torque produced
averaged over the ENTIRE 1/4 mile .

the SuperCharger 346 cid along
with 2.73 rear gear, 1100 launch, with 3500 Stall
with a traction problem , is causing a great amount of HP loss

around 1000 Ft ET mark , the engine showed as much as 632.0 Peak FLYWHEEL HP and 583.5 Peak Torque

Approx. shows 7.833 psi and 153.3 Ve %

For Automatic Trans w/Converter you might have
approx. 85.0 % Drivetrain Efficiency
which should give you

537.2 Peak RWHP and 496.0 Peak RWTQ

very hard to model your car ,
my program does very accurate calculations
as cars accelerate down track without traction or launch problems ..like for example ,

ProStock Cars or Trucks , NHRA Comp Eliminator Cars, NHRA Super Stock classes, ProStock MotorCycles, NHRA Stocker classes, and very good chassis bracket cars

the program looses accuracy quickly on servere
traction losses , Nitrous button being pressed
off on on during run, and throttle-stops .

Re: Calculate your engine's true HP/Torque Curves
 

Well I am very impressed. You nailed it pretty good actually even with my very inefficient drivetrain!
My actual peak airflow was around 64lbs/min and peak boost was 10psi. The average boost for the entire run was under 8psi.
Steve

Re: Calculate your engine's true HP/Torque Curves
 

Thanks for the interest Steve ,

one more thing that stood out was
between the 1000 Ft ET mark and the 1320 Ft ET mark.... are you keeping throttle to floor thru
1/4 mile ?? lifting a little early ??

the car should have ran a little more mph at 1320
Ft according to acceleration rate you were going at 1000 FT

Re: Calculate your engine's true HP/Torque Curves
 

yes it is floored. I think it is because of the tall 2.73 gears. Boost drops down in 3rd gear quite a bit as I drop to only about 5000 rpm and I also have a constant rate water/alky system flowing, so it goes a little rich as well in top gear.
All in all I begin to drop power by the end of the run.
It shifts into 3rd at a bit over 100mph.

What do you think it could do with decent traction 60fting around a 1.55?
I know it can do that on a better tire as I used to run 1.60's with these gears with less power.

Steve

Re: Calculate your engine's true HP/Torque Curves
 

Steve, possibly 131 MPH if it could maintain accleration after 1000 Ft mark ?

here's "Flywheel" Power curve based off Peak HP
race car showed

RPM=1000 Torque=330.1 HP=62.9
RPM=1100 Torque=337.7 HP=70.7
RPM=1200 Torque=345.4 HP=78.9
RPM=1300 Torque=353.2 HP=87.4
RPM=1400 Torque=361.1 HP=96.3
RPM=1500 Torque=369.2 HP=105.5
RPM=1600 Torque=377.4 HP=115.0
RPM=1700 Torque=385.7 HP=124.8
RPM=1800 Torque=394.1 HP=135.1
RPM=1900 Torque=402.6 HP=145.6
RPM=2000 Torque=411.1 HP=156.6
RPM=2100 Torque=419.7 HP=167.8
RPM=2200 Torque=428.4 HP=179.4
RPM=2300 Torque=437.0 HP=191.4
RPM=2400 Torque=445.7 HP=203.7
RPM=2500 Torque=454.4 HP=216.3
RPM=2600 Torque=463.0 HP=229.2
RPM=2700 Torque=471.5 HP=242.4
RPM=2800 Torque=480.0 HP=255.9
RPM=2900 Torque=488.4 HP=269.7
RPM=3000 Torque=496.6 HP=283.6
RPM=3100 Torque=504.6 HP=297.8
RPM=3200 Torque=512.4 HP=312.2
RPM=3300 Torque=520.0 HP=326.8
RPM=3400 Torque=527.4 HP=341.4
RPM=3500 Torque=534.4 HP=356.1
RPM=3600 Torque=541.1 HP=370.9
RPM=3700 Torque=547.4 HP=385.7
RPM=3800 Torque=553.4 HP=400.4
RPM=3900 Torque=558.9 HP=415.0
RPM=4000 Torque=564.0 HP=429.5
RPM=4100 Torque=568.5 HP=443.8
RPM=4200 Torque=572.6 HP=457.9
RPM=4300 Torque=576.1 HP=471.7
RPM=4400 Torque=579.1 HP=485.2
RPM=4500 Torque=581.5 HP=498.3
RPM=4600 Torque=583.4 HP=510.9
RPM=4700 Torque=584.6 HP=523.2
RPM=4800 Torque=585.2 HP=534.9
RPM=4900 Torque=585.2 HP=546.0
RPM=5000 Torque=584.6 HP=556.6
RPM=5100 Torque=583.4 HP=566.6
RPM=5200 Torque=581.6 HP=575.9
RPM=5300 Torque=579.3 HP=584.6
RPM=5400 Torque=576.3 HP=592.5
RPM=5500 Torque=572.8 HP=599.8
RPM=5600 Torque=568.7 HP=606.4
RPM=5700 Torque=564.2 HP=612.3
RPM=5800 Torque=559.2 HP=617.5
RPM=5900 Torque=553.7 HP=622.0
RPM=6000 Torque=547.7 HP=625.7
RPM=6100 Torque=541.4 HP=628.8
RPM=6200 Torque=535.4 HP=632.0
RPM=6300 Torque=526.9 HP=632.0
RPM=6400 Torque=518.6 HP=632.0
RPM=6500 Torque=510.7 HP=632.0
RPM=6600 Torque=502.9 HP=632.0
RPM=6700 Torque=495.4 HP=632.0
RPM=6800 Torque=488.1 HP=632.0
RPM=6900 Torque=480.4 HP=631.2
RPM=7000 Torque=472.0 HP=629.0
RPM=7100 Torque=463.4 HP=626.5
RPM=7200 Torque=454.8 HP=623.5
RPM=7300 Torque=446.1 HP=620.1
RPM=7400 Torque=437.5 HP=616.4
RPM=7500 Torque=428.8 HP=612.3
RPM=7600 Torque=420.1 HP=608.0
RPM=7700 Torque=411.5 HP=603.3
RPM=7800 Torque=403.0 HP=598.5
RPM=7900 Torque=394.5 HP=593.4
RPM=8000 Torque=386.1 HP=588.1
RPM=8100 Torque=377.8 HP=582.7
RPM=8200 Torque=369.6 HP=577.1
RPM=8300 Torque=361.5 HP=571.3
RPM=8400 Torque=353.6 HP=565.5
RPM=8500 Torque=345.7 HP=559.6
RPM=8600 Torque=338.1 HP=553.6
RPM=8700 Torque=330.5 HP=547.5
RPM=8800 Torque=323.1 HP=541.4
RPM=8900 Torque=315.8 HP=535.2
RPM=9000 Torque=308.7 HP=529.1
RPM=9100 Torque=301.8 HP=522.9
RPM=9200 Torque=295.0 HP=516.7
RPM=9300 Torque=288.3 HP=510.5
RPM=9400 Torque=281.8 HP=504.4
RPM=9500 Torque=275.5 HP=498.3
RPM=9600 Torque=269.3 HP=492.2
RPM=9700 Torque=263.2 HP=486.1
RPM=9800 Torque=257.3 HP=480.1
RPM=9900 Torque=251.6 HP=474.2
RPM=10000 Torque=245.9 HP=468.3
RPM=10100 Torque=240.5 HP=462.4
RPM=10200 Torque=235.1 HP=456.7
RPM=10300 Torque=229.9 HP=451.0
RPM=10400 Torque=224.9 HP=445.3
RPM=10500 Torque=220.0 HP=439.8
RPM=10600 Torque=215.2 HP=434.3
RPM=10700 Torque=210.5 HP=428.8
RPM=10800 Torque=205.9 HP=423.5
RPM=10900 Torque=201.5 HP=418.2
RPM=11000 Torque=197.2 HP=413.0
RPM=11100 Torque=193.0 HP=407.9
RPM=11200 Torque=188.9 HP=402.9
RPM=11300 Torque=184.9 HP=397.9
RPM=11400 Torque=181.1 HP=393.0
RPM=11500 Torque=177.3 HP=388.2
RPM=11600 Torque=173.6 HP=383.5
RPM=11700 Torque=170.1 HP=378.8
RPM=11800 Torque=166.6 HP=374.3
RPM=11900 Torque=163.2 HP=369.8
RPM=12000 Torque=159.9 HP=365.3
RPM=12100 Torque=156.7 HP=361.0
RPM=12200 Torque=153.6 HP=356.7
RPM=12300 Torque=150.5 HP=352.5
RPM=12400 Torque=147.6 HP=348.4
RPM=12500 Torque=144.7 HP=344.3
RPM=12600 Torque=141.9 HP=340.3
RPM=12700 Torque=139.1 HP=336.4
RPM=12800 Torque=136.5 HP=332.6
RPM=12900 Torque=133.9 HP=328.8
RPM=13000 Torque=131.3 HP=325.1
RPM=13100 Torque=128.9 HP=321.4
RPM=13200 Torque=126.5 HP=317.8
RPM=13300 Torque=124.1 HP=314.3
RPM=13400 Torque=121.8 HP=310.8
RPM=13500 Torque=119.6 HP=307.4
RPM=13600 Torque=117.4 HP=304.1
RPM=13700 Torque=115.3 HP=300.8
RPM=13800 Torque=113.2 HP=297.5
RPM=13900 Torque=111.2 HP=294.3
RPM=14000 Torque=109.2 HP=291.2
RPM=14100 Torque=107.3 HP=288.1
RPM=14200 Torque=105.5 HP=285.1
RPM=14300 Torque=103.6 HP=282.2
RPM=14400 Torque=101.8 HP=279.2
RPM=14500 Torque=100.1 HP=276.4
RPM=14600 Torque=98.4 HP=273.6
RPM=14700 Torque=96.7 HP=270.8
RPM=14800 Torque=95.1 HP=268.1
RPM=14900 Torque=93.5 HP=265.4
RPM=15000 Torque=92.0 HP=262.7

Re: Calculate your engine's true HP/Torque Curves
 

1. 2985 lbs
2 & 3. 2000 Z28 W T-tops
4. TH350
5. Ram-air
6. 6850
7. 6850
8. 1.38 60 FT, 9.825@136.84
9, 10, 11. DA of -1125'

1. 2.75, 1.52, 1.00
2. 4.10
3. 91.5" rollout
4. 10"
5. 10"
6. 4000 RPM
7. 4600 RPM
8. 170'
9. -1125'
12. 422 CI
13. 12.2:1

Re: Calculate your engine's true HP/Torque Curves
 

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">
<strong>

1-Total Car Weight with driver 3200
2-Frontal Area in Sq.Ft. (???98Z28)
3-Cd (Drag Coefficient) (???98Z28)
4-Automatic/Converter A4-4L60E/YankTP4400
5-Ram-Air HoodScoop YES
6-Shift RPM 6700
7-Cross RPM 6300
8- 1/4 mile ET and 1/4 mile MPH from time slip
Best E.t. has been 10.66 but the best MPH has been 125.1
9- Barometric Pressure Inches Hg. (30.1 ish)
10-Temperature degrees F (50ish)
11- Relative Humidity % percent (90%)

------------------------------------------------

2-Frontal Area in Sq.Ft.
3-Cd (Drag Coefficient)
......if you don't know this Info, then post what
Year Car , Make , and Model
Body Type=Convertible/FastBack/ etc.

98 Z28 (non SS & not lowered)

60 Ft 1.381
, 330 Ft 4.248
,1/8th mile 6.714
1/8mph 99.83
1320Ft ET/MPH 10.663@124.02

1- Transmission Ratios for all gears/speeds
3.06/1.62/1.00
2- Rear gear ratio 3.73
3- Rear tire diameter or rollout in inches 82"
4- Rear tire width in inches 9.6"
5- Rear wheel rim width in inches 9"
6- Launch RPM 3300 rpm
7- Converter (Max) Stall RPM 4400rpm
8- Track Elevation in Feet= 10' (ten feet, maybe less)
9- Density Altitude in feet -1569
10- Wet Bulb Temp deg F ?
11- Vapor pressure in Inches Hg. ?
12- Engine Size in cubic inches 346
13- Compression Ratio 11.3
</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Thanks for your time!

<img border="0" alt="[Camaro]" title="" src="graemlins/camaro.gif" />

Re: Calculate your engine's true HP/Torque Curves
 

1. 3480 lbs.
2. unknown {98' Camaro SS}
3. unknown {98' Camaro SS}
4. M6/Standard
5. Ram-air
6. 7000 rpm
7. 6900 rpm
8. 60' 1.546
330' 4.501
1/8 6.985 @ 98.12 mph
1000' 9.133
1/4 10.943 @ 124.56 mph
9. 30.19
10. 40.9
11. 29%

1. 2.66, 1.78, 1.30, 1.00
2. 4.56
3. 28.1"
4. 10"
5. 9"
6. 6400 rpm
7. n/a
8. 12'
9. -1511
10. unknown
11. unknown
12. 346 CI
13. 11.5:1

Gordon

<small>[ June 25, 2002, 10:45 PM: Message edited by: GTS SS ]</small>

Re: Calculate your engine's true HP/Torque Curves
 

Flywheel Peak HP=575.8 Torque=500.9 (600 RPM/SEC Acceleration Dyno Rate)
Flywheel Peak HP=604.6 Torque=525.9 (Steady-State non-Acceleration)

Torque Converter Peak Multiplication = 1.650

Torque Converter LockUp percent = 93.81
Torque Converter Slippage % = 6.19

Tire Rollout at 1320 Feet = 92.2
Tire Growth at 1320 Feet = .7 inches in rollout

Peak Engine Volumetric Efficiency % = 105.2 Ve

60= 1.380--47.523
330= 4.018--88.521
660= 6.250--110.053 to 109.686
1000= 8.182--127.372
1320= 9.825--136.876 to 137.334

0 to 30 mph=0.638
0 to 60 mph=2.041
0 to 80 mph=3.352
0 to 100 mph=5.025
0 to 120 mph=7.197

Ft ET MPH
-1 - .196 0.000 = Rollout ET @ 12 inches
0 .000 6.968 = Rollout MPH @ 12 inches

RPM=4000 Torque=463.1 HP=352.7
RPM=4100 Torque=468.5 HP=365.8
RPM=4200 Torque=473.6 HP=378.8
RPM=4300 Torque=478.3 HP=391.6
RPM=4400 Torque=482.7 HP=404.4
RPM=4500 Torque=486.6 HP=416.9
RPM=4600 Torque=490.1 HP=429.2
RPM=4700 Torque=493.1 HP=441.3
RPM=4800 Torque=495.7 HP=453.0
RPM=4900 Torque=497.7 HP=464.4
RPM=5000 Torque=499.3 HP=475.3
RPM=5100 Torque=500.3 HP=485.9
RPM=5200 Torque=500.9 HP=495.9
RPM=5300 Torque=500.9 HP=505.5
RPM=5400 Torque=500.4 HP=514.5
RPM=5500 Torque=499.3 HP=522.9
RPM=5600 Torque=497.8 HP=530.8
RPM=5700 Torque=495.8 HP=538.1
RPM=5800 Torque=493.2 HP=544.7
RPM=5900 Torque=490.2 HP=550.7
RPM=6000 Torque=486.8 HP=556.1
RPM=6100 Torque=482.9 HP=560.8
RPM=6200 Torque=478.6 HP=564.9
RPM=6300 Torque=473.9 HP=568.4
RPM=6400 Torque=468.8 HP=571.3
RPM=6500 Torque=463.4 HP=573.5
RPM=6600 Torque=458.2 HP=575.8
RPM=6700 Torque=451.4 HP=575.8
RPM=6800 Torque=444.7 HP=575.8
RPM=6900 Torque=438.3 HP=575.8
RPM=7000 Torque=432.0 HP=575.8
RPM=7100 Torque=425.3 HP=575.0
RPM=7200 Torque=418.3 HP=573.5
RPM=7300 Torque=411.2 HP=571.5
RPM=7400 Torque=403.9 HP=569.1
RPM=7500 Torque=396.6 HP=566.4

Re: Calculate your engine's true HP/Torque Curves
 

0 to 60 in 2 seconds........I like that <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />

Re: Calculate your engine's true HP/Torque Curves
 

Cool, 600 HP! That's about what I was thinking. <img border="0" alt="[Burnout]" title="" src="graemlins/burnout.gif" />

Re: Calculate your engine's true HP/Torque Curves
 

Raughammer ,
Flywheel HP results are
Peak HP=481.9 (600 RPM/SEC Dyno Acceleration Rate)
Peak Torque= 431.0 (600 RPM/SEC Dyno Acceleration Rate)

Peak HP=506.0 (Steady-State non-Acceleration)
Peak Torque=452.6 (Steady-State non-Acceleration)

you have a "perfect" acceleration curve for you
incremental times , hardly any deviation shows up !!!

Rear Tire rollout at 1320 Ft= 82.600 inches
Rear Tire rollout growth = .600 inches

you have an "EXTREMELY" efficient torque converter
Torque Converter LockUp percent % = 95.19
Torque Converter Slippage % = 4.81

Torque Converter Peak Multiplication = 1.900

Peak Engine Volumetric Efficiency % = 111.70 Ve

Ram-Air HP gain = 9.400 HP

The fact that the car really hooks and the very
efficient, high torque multiplication converter
combine to launch the car extremely well !!!

At 1st i thought it might be a DragStrip clock error,
but the acceleration curve shows its very possible
to run 1.381 60 Ft with a 10.663 1320 Ft ET .

60= 1.381 45.064
330= 4.243 80.294
660= 6.714 99.230 to 99.948
1000= 8.854 115.294
1320= 10.663 124.725 to 123.828

0 to 30 mph= 0.629 seconds
0 to 60 mph= 2.400 seconds
0 to 80 mph= 4.211 seconds
0 to 100 mph= 6.586 seconds
0 to 120 mph= 9.640 seconds

Ft ET MPH
-1 -0.196 0.000 = Rollout ET @ 12 inches
0 0.000 6.963 = Rollout MPH @ 12 inches
1 0.094 10.836
2 0.148 13.973
3 0.193 16.104
4 0.233 17.792
5 0.270 19.216
6 0.304 20.462
7 0.337 21.576
8 0.368 22.590
9 0.397 23.523
10 0.426 24.390
11 0.453 25.201
12 0.480 25.965
13 0.506 26.688
14 0.531 27.376
15 0.555 28.031
16 0.579 28.659
17 0.603 29.261
18 0.626 29.840
19 0.649 30.399
20 0.671 30.938
21 0.693 31.460
22 0.714 31.966
23 0.735 32.456
24 0.756 32.933
25 0.777 33.397
26 0.797 33.849
27 0.817 34.290
28 0.837 34.719
29 0.856 35.139
30 0.876 35.550
-------------------------

RPM=4000 Torque=408.8 HP=311.3
RPM=4100 Torque=412.8 HP=322.3
RPM=4200 Torque=416.6 HP=333.1
RPM=4300 Torque=420.0 HP=343.8
RPM=4400 Torque=423.0 HP=354.4
RPM=4500 Torque=425.6 HP=364.6
RPM=4600 Torque=427.8 HP=374.7
RPM=4700 Torque=429.6 HP=384.4
RPM=4800 Torque=430.9 HP=393.8
RPM=4900 Torque=431.8 HP=402.9
RPM=5000 Torque=432.3 HP=411.5
RPM=5100 Torque=432.3 HP=419.8
RPM=5200 Torque=431.9 HP=427.6
RPM=5300 Torque=431.0 HP=434.9
RPM=5400 Torque=429.6 HP=441.8
RPM=5500 Torque=427.9 HP=448.1
RPM=5600 Torque=425.7 HP=453.9
RPM=5700 Torque=423.1 HP=459.2
RPM=5800 Torque=420.1 HP=464.0
RPM=5900 Torque=416.8 HP=468.2
RPM=6000 Torque=413.0 HP=471.9
RPM=6100 Torque=409.0 HP=475.0
RPM=6200 Torque=404.6 HP=477.6
RPM=6300 Torque=399.9 HP=479.7
RPM=6400 Torque=395.5 HP=481.9
RPM=6500 Torque=389.4 HP=481.9
RPM=6600 Torque=383.5 HP=481.9
RPM=6700 Torque=377.8 HP=481.9
RPM=6800 Torque=372.2 HP=481.9
RPM=6900 Torque=366.8 HP=481.9
RPM=7000 Torque=361.0 HP=481.2
RPM=7100 Torque=354.9 HP=479.7
RPM=7200 Torque=348.6 HP=477.9
RPM=7300 Torque=342.3 HP=475.8
RPM=7400 Torque=335.9 HP=473.3
RPM=7500 Torque=329.5 HP=470.6

Re: Calculate your engine's true HP/Torque Curves
 

MaxRaceSoftware,

Is this enough info?

Weight: 3800
99 Chevy Camaro SS
Naturally Aspirated
6100 rpm shifts
3700 rpm launches
Tires: 275/40/17 BFG Dr's at 14 psi
60 ft. - 2.107
330 ft. - 5.635
1/8 - 8.560 @ 83.75
1000 ft. - 11.072
1/4 - 13.181 @ 107.34
It's a 6 speed
Stock Engine
Moser 12 bolt with 4:10
Track Elevation approx. 700 ft.
Temp. - 85 degrees
Humidty - around 80%
Baro - 30.00

Thanks,

Fred

Re: Calculate your engine's true HP/Torque Curves
 

Gordon here are results ,

Flywheel
Peak HP=461.4 (600 RPM/SEC dyno acceleration)
Peak Torque=406.4 (600 RPM/SEC dyno acceleration)

Peak HP=484.5 (Steady-State non-Acceleration)
Peak Torque=426.7 (Steady-State non-Acceleration)

Peak Volumetric Efficiency percent = 105.1 Ve%

Peak Ram-Air HorsePower gain = 8.90 HP

Rear tire rollout at 1320 Ft = 88.9 inches
Rear tire growth at 1320 Ft = 0.60 inches

Calculated Finish line RPM at 1320 Ft = 6778.0 RPM
if crossing at 6900 RPM then clutch is slipping = 1.77 percent

60= 1.546 42.416
330= 4.498 79.270
660= 6.985 98.940 to 99.505
1000= 9.128 115.108
1320= 10.943 124.171 to 123.466

0 to 30 mph= 0.862 seconds
0 to 60 mph= 2.769 seconds
0 to 80 mph= 4.570 seconds
0 to 100 mph= 6.892 seconds
0 to 120 mph= 9.977 seconds

Ft ET MPH
-1 -0.219 0.000 = Rollout ET @ 12 inches
0 0.000 6.220 = Rollout MPH @ 12 inches
1 0.121 8.855
----------------------------------------------------

the "Ideal" acceleration rate for 10.943 ET is
60= 1.482 43.412
330= 4.404 79.261
660= 6.907 97.870 to 96.920
1000= 9.085 112.784
1320= 10.943 120.946 to 122.131

0 to 30 mph= 0.769 seconds
0 to 60 mph= 2.635 seconds
0 to 80 mph= 4.482 seconds
0 to 100 mph= 6.977 seconds
0 to 120 mph= 10.543 seconds

you are loosing as much as 48.4 peak HP Loss
to traction from 0 Feet -to- 60 Feet distance

should be able to run these numbers if you could
get better traction ?
60= 1.442 44.451
330= 4.301 80.962
660= 6.751 99.963 to 99.151
1000= 8.883 115.294
1320= 10.700 123.730 to 124.744

0 to 30 mph= 0.718 seconds
0 to 60 mph= 2.468 seconds
0 to 80 mph= 4.202 seconds
0 to 100 mph= 6.525 seconds
0 to 120 mph= 9.758 seconds